if ($tabId = (string) $this->getRequest()->getParam('tab')) {
    Mage::getSingleton('admin/session')->setActiveTabId($tabId);
}

$this->_formScripts[] = '
    function saveAndContinueEdit(){
        editForm.submit($("edit_form").action+"back/edit/");
    }
    function delPhone(phoneId){
        if (window.confirm("Are you sure you want to delete this phone number?")){
            new Ajax.Request("' . Mage::helper('adminhtml')->getUrl('*/*/deletePhone') . '", {
                method: "Post",
                parameters: { "phoneId": phoneId },
                onComplete: function(transport){
                    vendorPhone.delPhone(phoneId);
                }
            });
        }
    }
    function delEmail(emailId){
        var confirm = false;
        if (window.confirm("Are you sure you want to delete this email?")){
            new Ajax.Request("' . Mage::helper('adminhtml')->getUrl('*/*/deleteEmail') . '", {
                method: "Post",
                parameters: { "emailId": emailId },
                onComplete: function(transport){
                    vendorEmail.delEmail(emailId);
                }
            });
        }
    }
';

protected function _getSaveAndContinueUrl()
{
    return $this->getUrl('*/*/save', array(
        '_current'  => true,
        'back'      => 'edit',
        'tab'       => '{{tab_id}}',
        'active_tab'=> null,
    ));
}